Merge pull request #938 from MichaelMure/cache-reorg

Generic cache layer

1 files changed, 9 insertions, 0 deletions

diff --git a/entity/dag/operation.go b/entity/dag/operation.go
index 1a778878..f50d91b6 100644
--- a/entity/dag/operation.go
+++ b/entity/dag/operation.go
@@ -63,6 +63,13 @@ type Operation interface {
 	setExtraMetadataImmutable(key string, value string)
 }
 
+type OperationWithApply[SnapT Snapshot] interface {
+	Operation
+
+	// Apply the operation to a Snapshot to create the final state
+	Apply(snapshot SnapT)
+}
+
 // OperationWithFiles is an optional extension for an Operation that has files dependency, stored in git.
 type OperationWithFiles interface {
 	// GetFiles return the files needed by this operation
@@ -83,6 +90,8 @@ type OperationDoesntChangeSnapshot interface {
 type Snapshot interface {
 	// AllOperations returns all the operations that have been applied to that snapshot, in order
 	AllOperations() []Operation
+	// AppendOperation add an operation in the list
+	AppendOperation(op Operation)
 }
 
 // OpBase implement the common feature that every Operation should support.